42761621 has 8 divisors (see below), whose sum is σ = 49154304. Its totient is φ = 36439920.

The previous prime is 42761591. The next prime is 42761627. The reversal of 42761621 is 12616724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42761621 - 2¹⁴ = 42745237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42761627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16445 + ... + 18866.

It is an arithmetic number, because the mean of its divisors is an integer number (6144288).

Almost surely, 2^42761621 is an apocalyptic number.

It is an amenable number.

42761621 is a deficient number, since it is larger than the sum of its proper divisors (6392683).

42761621 is a wasteful number, since it uses less digits than its factorization.

42761621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35491.

The product of its digits is 4032, while the sum is 29.

The square root of 42761621 is about 6539.2370350065. The cubic root of 42761621 is about 349.6912133682.

It can be divided in two parts, 4276 and 1621, that multiplied together give a palindrome (6931396).

The spelling of 42761621 in words is "forty-two million, seven hundred sixty-one thousand, six hundred twenty-one".